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I'm really surprised a little 831 is giving you that much trouble with vibration. DieselAddict has the right idea, I tell everyone who buys a gen from mr to stick it on a Tractor Supply horse stall mat to keep it quiet and stop it from walking around. When bolting it down you should also isolate...

Best thing I've found for the metering pumps is to get a gallon of the "soaking style" carburator cleaner and soak them for a couple days, that usually fe=rees everything up, but if you disassembled them and reassembled incorrectly you'll have to take it apart again. Unfortunately the few I've...

No picture.... what did you find inside??

I don't think I've ever seen a schematic for the pumps.

Yes, tanks are different. Read posts 20 and 21. You need an 8" for a 803 but you may need to put a little "spacer" on the bottom to prevent the float from touching the step in the tank.

It's difficult to say as far as the oil mist and crankcase pressure, without seeing it in person, but keep in mind, both pistons move up and down in unison not 180* apart, so pulsating air is somewhat normal. If the motor sounds like it is cranking too freely ( lack of compression resistance...

Pleased2fly, You may have just saved me an angry customer and possibly a damaged motor.... Had a customer coming for an 802 Sat. and I knew which of the 2 he was going to choose from, so I was double checking everything before he came and thought of this thread. Wouldn't you know it! one of the...

Me too! If it was ever printed, discussed or even once thought about.... Guy probably has a copy of it! Unbelievable!

Thanks Guy, the last 2 docs are somewhat relevant in that it shows the old PSU pump and then superseded by the Ambac PN. What's pretty funny is that the TM actually shows the old PSU pump in the exploded views, but I never even noticed because I've always used the Ambac docs. ( also attached in...

Thanks for the effort Guy. Looking at it quickly I would think I could probably convert the Bosch to Ambac by changing the plunger and the gear ( since the Bosch gear is missing the recess for the plunger guide ) and adding the plunger guide. There are also a couple other minor differences like...

Do you have the parts you need already? If not I have cranks, rods, pistons, rod bearings but no new main bearings. I also have a rebuilt motor and parts motors, If you need anything.

I've been in the governors before, but only with the engine removed. Not sure how well you can see or access things unless you at least remove the radiator and housing. After that removing the front cover is simple. I've seen issues with incorrectly assembled internal linkage and other issues...

Thank you Guy. on the pump itself it says American Bosch Type PSU 2/4-80E-9328A Looking in the TM for part numbers, it only shows the plunger as being part of the entire hydraulic head assembly, Onan PN 147-0323 The drive pin looks to be available as part of kit 147-0306 but haven't been able to...

So, I learn something new every day! Today I went to work on my last 002a I have yet to finish and it has an injection pump problem. The typical stuck plunger and stiff control lever etc. I took it out and disassembled it to find the plunger broken in half. I pulled the pump off of a spare...

Good work tracking down the problem, but I have a bit of a concern with the repair. I believe the item in question is a voltage regulator. It is mounted to the aluminum case which does act as a heat sink. Given that the component has shorted internally, I would be concerned that is would fail...

My only thoughts on the 1/8" line is that it may be too small to fit over the plastic barbed fittings. You might be ok if the hose id soft and flexible enough, but if it's too small you may split the hose down the side trying to force it on. I've never tried anything that small, but you won't...

Sounds like you have something wrong under the IP cover. When you open it up, check the springs and the linkage to make sure nothing is gummed up or out of place. There is also a little "hydraulic dampener" in there ( like a cylinder and plunger with a small relief hole in the side ) if that is...

In the TM section of this forum you can find the manuals for this machine, the removal and install instructions are in the section about the Injection pump. It's pretty straight forward. There is a flat spacer shim and an o-ring against the block. You can usually reuse the o-ring, I have seen...

I don't think either of the PN's you listed are what you need, they both seem like rebuild gasket kits. You need a new control lever assembly PN. CU 8514A , item 14 in the Ambac pump diagram. This will come with the external o-ring on it. When the throttle lever leaks around the shaft it's the...

The leak is most likely the seal inside the control lever assembly, not the external o-ring. I'd just get a new control lever kit. You have to take the pump off to change it so might as well be sure it's fixed the first time!